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Finding the Fourth Proportional to 818.69, 1,228.12 and 241.73

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Solution

The fourth proportional to 818.69, 1,228.12 and 241.73 is: 362.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.69 : 1,228.12 = 241.73 : x
  2. Step 2: Convert to fraction form
    818.69/1,228.12 = 241.73/x
  3. Step 3: Cross multiply
    818.69x = 1,228.12 × 241.73
  4. Step 4: Simplify right side
    818.69x = 296,872.24
  5. Step 5: Solve for x
    x = 296,872.24/818.69
  6. Step 6: Final answer
    x = 362.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.